Device for changing an operational status of a shifting element with two shifting element halves

a technology of shifting element and operating condition, which is applied in the direction of magnetically actuated clutches, mechanical actuators, mechanical apparatus, etc., can solve the problems of increasing the fuel consumption of the vehicle, undesirable permanent current flow, and shifting element over its operating life, so as to achieve low cost, low cost, and efficient operation
US20120255828A1Inactive Publication Date: 2012-10-11ZF FRIEDRICHSHAFEN AG
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ZF FRIEDRICHSHAFEN AG
Publication Date
2012-10-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A mechanism for changing the operating condition of a shifting element having two shifting element halves, which can either be functionally connected to connect two components or disengaged to break the connection between the components. The mechanism includes a drive machine and a drive converter unit in the area of which rotary drive motion of the drive machine can be converted into a translational actuation movement of the shifting element. A spring device is associated with the drive converter unit, whose spring force assists with actuating the shifting element in the engaging direction. The spring device includes an approximately circular flat spring element which, in at least one area of the drive converter unit, is in contact with at least one cam, whose stress condition varies as a function of an operating condition of the drive converter unit and is designed to be rotationally fixed.
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Description

[0001] This application claims priority from German patent application serial no. 10 2011 006 965.8 filed Apr. 7, 2011.FIELD OF THE INVENTION

[0002] The invention concerns a device for changing an operating condition of a shifting element with two shifting element halves.BACKGROUND OF THE INVENTION

[0003] All-wheel vehicle drive-trains are increasingly made with frictional shifting elements by means of which, in each case, drive torque produced by an internal combustion engine, which is converted in the area of a transmission connected downstream from the internal combustion engine as a function of an overall gear ratio currently engaged in the transmission in an operating-condition-dependent manner, can be distributed in varying degrees between two driven vehicle axles of the all-wheel drive-train, in order to influence the driving behavior of the all-wheel vehicle, for example to increase the driving safety.

[0004] To do this, the transmission capability of such shifting elements has to ...

Claims

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